this is my spell lists so far to help you if you don't know what is what
Incantation Type of spell / charm Resulting Effect
Accio Charm Summons an object
Alohomora Charm Opens lokced objects
Aparecium Spell Reveals invisible ink

What did Voldemort do right after his return and battle with Harry in the Goblet of Fire to remain hidden? How did he ensure that the wizarding world would remain ignorant to his return and eventual reign of terror?